MAX1401CAI

Product Summary

The MAX1401CAI 18-bit, low-power, multichannel, serialoutput ADC uses a sigma-delta modulator with a digital decimation filter to achieve true 16-bit accuracy. The user-selectable decimation factor of the digital filter all ows the conversion resolution to be reduced inexchange for a higher output data rate. The device achieves true 16-bit performance at an output data rate of up to 480sps. In addition, the modulator sampl ing frequency may be optimized for either lowest power dissipation or highest throughput rate. The MAX1401CAI operates from +3V.It is used in portable industrial instruments, portable weigh scales, loop-powered systems, pressure transducers and so on.

Parametrics

MAX1401CAI absolute maximum ratings: (1)V+ to AGND, DGND: -0.3V to +6V; (2)VDD to AGND, DGND:-0.3V to +6V; (3)AGND to DGND:-0.3V to +0.3V; (4)Analog Inputs to AGND:-0.3V to (V+ + 0.3V); (5)Analog Outputs to AGND:-0.3V to (V+ + 0.3V); (6)Reference Inputs to AGND:-0.3V to (V+ + 0.3V); (7)CLKIN and CLKOUT to DGND:-0.3V to (VDD + 0.3V); (8)All Other Digital Inputs to DGND:-0.3V to +6V; (9)All Digital Outputs to DGND:-0.3V to (VDD + 0.3V); (10)Maximum Current Input into Any Pin:50mA; (11)Continuous Power Dissipation (TA = +70°C):28-Pin SSOP (derate 9.52mW/°C above +70°C) :524mW; (12)Operating Temperature Ranges:0°C to +70°C; (13)Storage Temperature Range :-60°C to +150°C; (14)Lead Temperature (soldering, 10sec):+300°C.

Features

MAX1401CAI Features: (1)18-Bit Resolution, Sigma-Delta ADC; (2)16-Bit Accuracy with No Missing Codes to 480sps; (3)Access to the Mux Output/ADC Input ; (4)Low Quiescent Current 250μA (operating mode) 2μA (power-down mode); (5)3 Fully Differential or 5 Pseudo-Differential Signal Input Channels; (6)2 Additional Fully Differential Calibration Channels/Auxiliary Input Channels; (7)Programmable Gain and Offset; (8)Fully Differential Reference Inputs; (9)Converts Continuously or On Command; (10)Automatic Channel Scanning and Continuous Data Output Mode; (11)Operates with Analog and Digital Supplies from +2.7V to +3.6V; (12)SPI/QSPI-Compatible 3-Wire Serial Interface; (13)28-Pin SSOP Package.

Diagrams